[all-commits] [llvm/llvm-project] 9859c0: [SimplifyLibCalls] Add initial support for non-8-b...

[Sergei Barannikov via All-commits]

  Branch: refs/heads/users/s-barannikov/byte/7-simplify-lib-calls
  Home:   https://github.com/llvm/llvm-project
  Commit: 9859c07861131607e36d3de2ee0d2a9980b8d6da
      https://github.com/llvm/llvm-project/commit/9859c07861131607e36d3de2ee0d2a9980b8d6da
  Author: Sergei Barannikov <barannikov88 at gmail.com>
  Date:   2024-11-04 (Mon, 04 Nov 2024)

  Changed paths:
    M llvm/include/llvm/Analysis/ValueTracking.h
    M llvm/include/llvm/Transforms/Utils/SimplifyLibCalls.h
    M llvm/lib/Analysis/MemoryBuiltins.cpp
    M llvm/lib/Analysis/ValueTracking.cpp
    M llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
    M llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
    M llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/fputs-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/fwrite-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/memchr-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/memcmp-b32.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/memcpy-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/memcpy_chk-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/mempcpy-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/memrchr-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/memset-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/stpcpy-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/stpcpy_chk-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/stpncpy-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strcat-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strchr-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strcmp-b32.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strcpy-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strcpy_chk-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strlcpy-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strlen-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strncat-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strncmp-b32.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strncpy-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strndup-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/strnlen-b16.ll
    A llvm/test/Transforms/InstCombine/SimplifyLibCalls/wcslen-b16.ll
    M llvm/test/Transforms/InstCombine/bcmp-1.ll
    M llvm/test/Transforms/InstCombine/memcmp-1.ll
    M llvm/test/Transforms/InstCombine/strncmp-1.ll

  Log Message:
  -----------
  [SimplifyLibCalls] Add initial support for non-8-bit bytes

The patch makes CharWidth argument of `getStringLength` mandatory
and ensures the correct values are passed in most cases.
This is *not* a complete support for unusual byte widths in
SimplifyLibCalls since `getConstantStringInfo` returns false for those.
The code guarded by `getConstantStringInfo` returning true is unchanged
because the changes are currently not testable.



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